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Golang program to calculate the power of a given number using goto statement

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mahmoud2506
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2022-05-27
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In this program, we will read an integer number and its power from the user and then calculate the power of a given number and print the result on the console screen.

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mahmoud2506
2022-05-27
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Program/Source Code:

The source code to calculate the power of a given number using the goto statement is given below. The given program is compiled and executed successfully.

// Golang program to calculate the power of a 
// given number using the goto statement

package main

import "fmt"

func main() {
	var num int = 0
	var power int = 0
	var result int = 1

	fmt.Print("Enter Number: ")
	fmt.Scanf("%d", &num)

	fmt.Print("Enter Power: ")
	fmt.Scanf("%d", &power)

MyLbl:
	result = result * num

	power = power - 1

	if power >= 1 {
		goto MyLbl
	}
	
	fmt.Printf("Result is: %d", result)
}

Output:

Enter Number: 2
Enter Power: 3
Result is: 8

Explanation:

Here, we declare the package main. The main package is used to tell the Go language compiler that the package must be compiled and produced the executable file. Here, we imported the fmt package that includes the files of package fmt then we can use a function related to the fmt package.

In the main() function, we created three variables num, power, result that are initialized with 0,0,1 respectively and also created a label MyLbl.

MyLbl:
    result = result*num
        
    power=power-1
        
    if(power>=1){
        goto MyLbl
    }
    fmt.Printf("Result is: %d",result)

In the above code, we multiplied the variable num and result then assigned the result into the result variable. After that, we decreased the value of the power variable by 1 till it reaches 0 using the goto statement. At last, we printed the calculated result on the console screen.

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